com.orientechnologies.orient.core.storage.impl.local.paginated

Class OClusterPage

java.lang.Object

com.orientechnologies.orient.core.storage.impl.local.paginated.base.ODurablePage

com.orientechnologies.orient.core.storage.impl.local.paginated.OClusterPage

public class OClusterPage
extends ODurablePage

Since:

19.03.13

Author:

Andrey Lomakin

Field Summary

Fields

Modifier and Type	Field and Description
static int	MAX_ENTRY_SIZE
static int	MAX_RECORD_SIZE
static int	PAGE_SIZE

Fields inherited from class com.orientechnologies.orient.core.storage.impl.local.paginated.base.ODurablePage

changes, CRC32_OFFSET, MAGIC_NUMBER_OFFSET, MAX_PAGE_SIZE_BYTES, NEXT_FREE_POSITION, WAL_POSITION_OFFSET, WAL_SEGMENT_OFFSET

Constructor Summary

Constructors

Constructor and Description
OClusterPage(OCacheEntry cacheEntry, boolean newPage, OWALChanges changes)

Method Summary

Modifier and Type	Method and Description
int	appendRecord(int recordVersion, byte[] record)
void	clearAndMarkAsFilled()
boolean	deleteRecord(int position)
void	dumpToLog() Writes binary dump of this cluster page to the log.
int	findFirstDeletedRecord(int position)
int	findFirstRecord(int position)
int	findLastRecord(int position)
int	getFreeSpace()
int	getMaxRecordSize()
long	getNextPage()
long	getPrevPage()
byte[]	getRecordBinaryValue(int recordPosition, int offset, int size)
byte	getRecordByteValue(int recordPosition, int offset)
long	getRecordLongValue(int recordPosition, int offset)
int	getRecordsCount()
int	getRecordSize(int position)
int	getRecordVersion(int position)
boolean	isDeleted(int position)
boolean	isEmpty()
int	replaceRecord(int entryIndex, byte[] record, int recordVersion)
void	setNextPage(long nextPage)
void	setPrevPage(long prevPage)
void	setRecordLongValue(int recordPosition, int offset, long value)

Methods inherited from class com.orientechnologies.orient.core.storage.impl.local.paginated.base.ODurablePage

deserializeFromDirectMemory, getBinaryValue, getByteValue, getChanges, getIntValue, getLogSequenceNumber, getLogSequenceNumberFromPage, getLongValue, getLsn, getObjectSizeInDirectMemory, getPageData, moveData, restoreChanges, setBinaryValue, setByteValue, setIntValue, setLongValue, setLsn, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

PAGE_SIZE

public static final int PAGE_SIZE

MAX_ENTRY_SIZE

public static final int MAX_ENTRY_SIZE

MAX_RECORD_SIZE

public static final int MAX_RECORD_SIZE

Constructor Detail

OClusterPage

public OClusterPage(OCacheEntry cacheEntry,
                    boolean newPage,
                    OWALChanges changes)
             throws IOException

Throws:

IOException

Method Detail

clearAndMarkAsFilled

public void clearAndMarkAsFilled()
                          throws IOException

Throws:

IOException

appendRecord

public int appendRecord(int recordVersion,
                        byte[] record)
                 throws IOException

Throws:

IOException

replaceRecord

public int replaceRecord(int entryIndex,
                         byte[] record,
                         int recordVersion)
                  throws IOException

Throws:

IOException

getRecordVersion

public int getRecordVersion(int position)

isEmpty

public boolean isEmpty()

deleteRecord

public boolean deleteRecord(int position)
                     throws IOException

Throws:

IOException

isDeleted

public boolean isDeleted(int position)

getRecordSize

public int getRecordSize(int position)

findFirstDeletedRecord

public int findFirstDeletedRecord(int position)

findFirstRecord

public int findFirstRecord(int position)

findLastRecord

public int findLastRecord(int position)

getFreeSpace

public int getFreeSpace()

getMaxRecordSize

public int getMaxRecordSize()

getRecordsCount

public int getRecordsCount()

getNextPage

public long getNextPage()

setNextPage

public void setNextPage(long nextPage)
                 throws IOException

Throws:

IOException

getPrevPage

public long getPrevPage()

setPrevPage

public void setPrevPage(long prevPage)
                 throws IOException

Throws:

IOException

setRecordLongValue

public void setRecordLongValue(int recordPosition,
                               int offset,
                               long value)
                        throws IOException

Throws:

IOException

getRecordLongValue

public long getRecordLongValue(int recordPosition,
                               int offset)

getRecordBinaryValue

public byte[] getRecordBinaryValue(int recordPosition,
                                   int offset,
                                   int size)
                            throws IOException

Throws:

IOException

getRecordByteValue

public byte getRecordByteValue(int recordPosition,
                               int offset)

dumpToLog

public void dumpToLog()

Writes binary dump of this cluster page to the log.